Update conda environment name for CI

[ajschmidt8]

The gdf conda environment has been replaced with the rapids environment. A symlink was put in place for gdf to continue to work, but the symlink will be removed in the near future. This PR updates all scripts to use the rapids environment name.

[ajschmidt8]

@efajardo-nv and/or @BartleyR, can you review/test the changes in a225092? I believe that was causing the CI issues seen in my previous commit (log link). CI is running with Python 3.8, but gwerbin only has a 3.7 version of seqeval on Anaconda. Therefore conda was installing the seqeval 0.0.12 version from conda-forge, which was downgrading arrow to 1.0.1, which we no longer use as of rapidsai/cudf#7495. From my local testing, upgrading to seqeval 1.2.2 seems to prevent arrow from being downgraded.

Here's the changelog related to seqeval 1.2.2 for reference: https://github.com/chakki-works/seqeval/releases/tag/v1.2.2

[ajschmidt8]

Actually, upon further inspection, seqeval 1.2.2 is what's in the Docker images by default right now (see screenshot below). And the cybert_example_training.ipynb notebook seems to run fine there. So I think this change should be fine.

[ajschmidt8]

@gpucibot merge